copy

copy

More than 600 Porto city buses and taxis have been fitted with routers to provide free Wi-Fi service. It's being touted as the biggest Wi-Fi-in-motion network in the world.
Sérgio Rodrigues/Veniam
hide caption

The sun sets as a visitor uses his mobile phone Monday during the opening day of the 2015 Mobile World Congress in Barcelona. Wall Street Journal reporter Ryan Knutson — interviewed from the conference Monday via Skype by NPR's Robert Siegel — says that for some smartphone users, Wi-Fi may be able to replace most of the functionality of a cellphone carrier.
Josep Lago/AFP/Getty Images
hide caption

T-Mobile CEO John Legere pitches a plan that allows unlimited music streaming without additional data charges. Some net neutrality proponents want the FCC to limit plans like these; the commission says it will review them on a case-by-case basis.
Ted S. Warren/AP
hide caption

With the technology to conduct more nuanced tests, some companies say they can provide more useful detail about how people think in dynamic situations.
Marcus Butt/Getty Images/Ikon Images
hide caption

Some colleges and police departments are starting to use software that scans social media to identify local threats, but most tips still come from members of the public.
Ikon Images/Getty Images
hide caption

Writer Edwidge Danticat at around 10 years-old with her brother Bob and cousin Nick in Haiti. She joined her parents in the U.S. a couple of years later. She describes it as a tough landing.
Edwidge Danticat
hide caption